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Source: modelscope
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Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.
@modelcontextprotocol/sdk has cross-client data leak via shared server/transport instance reuse
Anthropic's MCP TypeScript SDK has a ReDoS vulnerability
Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default
axios Vulnerable to Full Man-in-the-Middle via Prototype Pollution Gadget in `config.proxy`
axios Vulnerable to Credential Theft and Response Hijacking via Prototype Pollution Gadget in Config Merge
LOG_LEVELMCP_DEBUGEnable debug logs by setting =debugMCP_ENABLE_SOURCE_MAPSEnable source maps by setting =1 (Node 18+ also supports the --enable-source-maps flag)MCP_HTTP_HOST127.0.0.1 Interface to bind. Loopback by default — set to 0.0.0.0 to expose.MCP_HTTP_PATH/mcp MCP endpoint path.MCP_HTTP_PORT(or PORT) 3000 Port to bind.MCP_HTTP_TOKEN_(unset)_ When set, every request must send Authorization: Bearer <token>. When unset, no auth is enforced — only safe on a trusted loopback/network.MCP_TRANSPORThttp n8n-mcpN8N_API_KEYexport =your_api_key_hereN8N_BASE_URLexport =http://localhost:5678N8N_PASSWORDN8N_USERNAME=test, =testN8N_TEMPLATES_HOSTBacked by the public, unauthenticated [n8n template library](https://n8n.io/workflows) (api.n8n.io, overridable via ) — no n8n license or auth required.N8N_USERNAMEtest, N8N_PASSWORD=testPORTTool annotations
No tools have read-only/destructive annotations
Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.
All four hints declared on every tool
49/49 tools missing one or more hints — list_workflows (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_workflow (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); create_workflow (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +46 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.
For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.
Tool test coverage
33/49 tools referenced in tests (67%)
Write tests that reference each tool by name so every tool has at least one test.
Secrets stay with their owner
2 secret/sensitive values flow into network calls (N8N_API_KEY → dynamic, N8N_API_KEY → dynamic)
Audit where credentials are sent. A NOTION_TOKEN should only reach api.notion.com — never a third-party host.
Secrets not logged
1 secret value sent to console.log
Redact or omit secret values from log output.
Production dependencies are patched
0 critical, 14 high severity in production deps — @modelcontextprotocol/sdk@1.18.2 (high), @modelcontextprotocol/sdk@1.18.2 (high)
Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.
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